Bio - Unit 3, Chapter 10, Lesson 3

According to Chargaff's Rule, which bases pair together in DNA?

• Adenine and Thymine

• Cytosine and Guanine

• Adenine and Cytosine

• Thymine and Guanine

What is the total percentage of Adenosine, Thymine, Cytosine, and Guanine in DNA according to Chargaff's Rule?

• 100%

• 50%

• 25%

• 75%

What is chromosomal deletion?

• The addition of a portion of a chromosome

• The loss of a portion of a chromosome

• The duplication of a chromosome

• The inversion of a chromosome

What is chromosomal duplication? A segment of the chromosome is repeated, it's the opposite of deletion.

• A segment of the chromosome is repeated

• A segment of the chromosome is deleted

• A segment of the chromosome is inverted

• A segment of the chromosome is translocated

What is chromosomal inversion?

• When part of the chromosome is deleted

• When part of the chromosome becomes oriented in the reverse of its usual direction

• When part of the chromosome is duplicated

• When part of the chromosome is translocated

Chromosomal mutations are:

• Changes in the structure or number of chromosomes

• Mutations in the DNA sequence

• Alterations in the protein structure

• Variations in the cell membrane

Chromosomal mutations take place when the number of chromosomes changes or when structural changes occur in the chromosomes. True or False?

• True

• False

Chromosomal translocation is a type of genetic mutation. What does it involve?

• Exchange of segments between non-homologous chromosomes

• Duplication of a chromosome segment

• Loss of a chromosome segment

• Inversion of a chromosome segment

What is a codon?

• A protein molecule

• A three-nucleotide sequence on messenger RNA that codes for a single amino acid

• A type of cell

• A DNA strand

What is the term for the sequence of the DNA on one strand that chemically matches the sequence on the other strand?